Diffraction patterns of the samples with different concentrations at 30 °C and near full hydration. (A) Penicillin was mixed with Di22:1PC bilayers at molar ratios of 0, 1/50, 1/15, and 1/5. (B) Sulbactam was mixed with Di22:1PC bilayers at molar ratios of 0, 1/50, 1/15, and 1/5. (C) Cholesterol was mixed with Di22:1PC bilayers at molar ratios of 0, 1/50, 1/25, 1/15, 1/10, and 1/5. The discontinuity in the diffraction patterns indicated by the arrow is due to the change of attenuator.